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Intelligent temperature monitoring and control system using AVR microcontroller

Controlling temperature has been a prime objective in various applications including refrigerators, air conditioners, air coolers, heaters, industrial temperature conditioning and so on. Temperature controllers vary in their complexities and algorithms. Some of these use simple control techniques like simple on-off control while others use complex Proportional Integral Derivative (PID) or fuzzy logic algorithms. In […]

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AVR acoustic spectrum analyzer using Atmega8 microcontroller

AVR acoustic spectrum analyzer, based on Atmega8 AVR microcontroller, operational amplifier, and few other components. Use any HD44780 compatible LCD or VFD, connect audio signal, and enjoy the effect 🙂 You can build in this into your amplifier, pc, car-audio, or other device. On this moment device support following displays: 16*2, 20*2, 24*2, and 20*4.

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Wireless Accelerometer Controlled rgb-LED’s using atmega168 microcontroller

MEMS (Micro-Electro-Mechanical Systems) Accelerometers are in widespread use as tilt-sensors in mobile phones and cameras. Simple accelerometers are available both as ic-chip’s and cheap development pcb-boards. Wireless chips are also affordable and available in assembled circuits, with matched antenna-network and decoupling-caps onboard. Hook both wireless board and accelerometer up to a microcontroller via serial interface

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Color Sensor using Atmega16 microcontroller

This is a simple color sensor using  Atmega16 MCU and can sense Red ,Green and Blue color. How it works: the sensor consist from LDR sensor and RGB LED ,so when the object putted on the sensor the light that emitting  from RGB LED will reflected from the object  to LDR sensor and read it by ADC of ATMEGA16 as

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Arduino FTDI Header using ATmega8 microcontroller

So, you want to program a bootloaded AVR. Or possibly, you have an Arduino Lilypad and no way to program it. There are a few solutions available to you: You could buy a USB to FTDI adapter (available at Adafruit, Sparkfun, etc), you could buy a simple FTDI cable, or you could build something. I

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How to use a 74HC595 Shift Register with a using AVR ATtiny13 microcontroller

If you have been playing with microcontrollers and electronics then you have likely seen LED dot matrix displays and other projects that use shift registers like 7-segment displays and more. This instructable goes over a quick intro to the 74HC595 8-Bit Serail to Parallel Shift Register with Latch and how to interface it to an

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$10 ATtiny85/45 POV display!! (works really well)

Hey guys! This is an Instructable for making your own ATtiny85/45 5 LED POV (Persistence Of Vision) display! This is my second Instructable, also for the Elemental LED contest, so drop a comment and vote it up! The total parts cost for this POV display is under $10! (If you get the parts from a

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The $9 Quasi-duino (Almost-duino) using ATmega328 microcontroll

Do you currently have an Arduino and want to make it smaller for cheap?  The Quasi-duino is for you (Italian for almost-duino).  This makes a functional “almost” Arduino, in a very small form factor using the narcoleptic library for pico-power operations on a pico-space breadboard.  This ‘ible will use Arduino 1.0.  All of your Arduino

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$1.50 Arduino TV Annoyer!! (Turns TVs on when you want them off) using microcontroller

Hey Arduino fans! Here is an ‘ible for making a device that turns TVs on when you want them off, and off then you want them on! If you hide it in something inconspicuous, it would make a great April Fools joke or gag gift. And the best part is that the total parts cost

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